Attitude controlling system for vehicle-supported equipment

• US 4,775,939 A
• Filed: 09/10/1985
• Issued: 10/04/1988
• Est. Priority Date: 09/10/1984
• Status: Expired due to Term

• Current Assignee: Aisin Seiki Co., Ltd. (Aisin Corp.), Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Aisin Seiki Kabushiki Kaisha (Aisin Corp.), Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: Nakashima, Hiroshi, Hiro, Kohji, Ishikawa, Masanobu, Kuwana, Kazutaka
• Primary Examiner(s): Lall, P. S.
• Assistant Examiner(s): Trans, V. N.
• Application Number:
  US06/774,511
• Time in Patent Office: 1,120 Days
• Field of Search: 364/424, 364/425, 318/568, 318/467, 318/466, 74/484 R
• US Class Current: 701/49
• CPC Class Codes: B62D 1/181 with power actuated adjustment, e.g. with position memory

Abstract

A tilt steering mechanism, a telescopic steering mechanism and a seat attitude adjusting mechanism are controlled in their attitudes by an electric motor such that the respective attitudes are automatically set into a retreat attitude where the driver easily gets on and off a vehicle upon boarding/alighting, and into a driving attitude assumed before retreat upon the completion of boarding. Whether or not the driver is about to get on and off the vehicle is judged in accordance with the status of an ignition switch, status of a door switch, vehicle speed, status of a parking brake, shift lever position of a transmission, etc. A change speed of attitude is monitored during energization of the electric motor and, if the change speed is less than a predetermined value, this is judged as the presence of overload and the electric motor is stopped.

Claims

1. An attitude controlling system for vehicle-supported equipment comprising:

a vehicle-supported attitude controlling mechanism for setting an attitude of at least one vehicle-supported equipment such as a steering wheel or seat;

an electric drive source for driving said vehicle-supported attitude controlling mechanism;

attitude detection means for detecting the attitude of said vehicle-supported equipment;

at least two vehicle stoppage detection means for outputting signals in response to the presence or absence of stopping of a vehicle and the boarding/alighting action of a driver; and

electronic control means for controlling an automatic operation for energizing said electric drive source to automatically set said vehicle-supported equipment into a boarding/alighting position when said vehicle stoppage detection means outputs at least two signals indicative of stopping of the vehicle and alighting action of the driver and for energizing said electric drive source to automatically set said vehicle-supported equipment into a driving position when said vehicle stoppage detection means outputs signals indicative of release from stopping of the vehicle and boarding action of the driver and for controlling a manual operation energizing said electric drive source in accordance with a state of said manual attitude adjusting switch for inhibiting said automatic operation when said mode changing switch is turned off and for inhibiting said manual operation when said engine stoppage detecting means detects engine stoppage, and wherein said electronic control means monitors the voltage of a vehicle-supported battery and, when the battery voltage is lowered less than a predetermined value, inhibits energization of said electric drive source at least during stop of the engine.

2. An attitude controlling system for vehicle-supported equipment according to claim 1, wherein said vehicle stoppage detection means includes at least two among switch means adapted to detect the status of an engine key, switch means adapted to detect opening/closing of a door, switch means adapted to detect a vehicle speed, switch means adapted to the status of a parking brake of the vehicle, and switch means adapted to detect a position of a shift lever of a transmission.

3. An attitude controlling system for vehicle-supported equipment according to claim 2, wherein said switch means adapted to detect the status of an engine key output a signal in response to insertion/removal of the engine key.

4. An attitude controlling system for vehicle-supported equipment according to claim 1, wherein said vehicle stoppage detection means includes switch means adapted to detect the status of an engine key, switch means adapted to detect a vehicle speed and switch means adapted to detect the status of a parking brake of the vehicle, and when all outputs from said three means indicate stopping of the vehicle, said electronic control means energizes said electric drive source to automatically set said vehicle-supported equipment into a boarding/alighting position.

5. An attitude controlling system for vehicle-supported equipment according to claim 1, wherein said vehicle-supported attitude controlling mechanism comprises a mechanism for setting at least one of inclination and length of a steering column and a mechanism for turning the seat substantially about a vertical axis, and wherein said electronic control means automatically positions the steering column to its boarding/alighting position upon receipt of at least two signals indicative of stopping of the vehicle, turns the seat to automatically position the same into its boarding/alighting position upon detection of opening of the door, turns the seat to automatically position the same to its driving position upon detection of closing of the door, and automatically positions the steering column into its driving position upon release from stopping of the vehicle.

6. An attitude controlling system for vehicle-supported equipment according to claim 1, wherein said electronic control means includes a manual attitude adjusting switch, energizes said electric drive source in response to operation of said manual attitude adjusting switch, detects the presence or absence of rotation of an engine, and upon detection of stop of the engine, inhibits any more attitude adjustment in response to said manual attitude adjusting switch.

7. An attitude controlling system for vehicle-supported equipment according to claim 1, wherein before energizing said electric drive source, said electronic control means monitors a change speed of attitude detected by said attitude detection means to judge the presence or absence of overload, and makes predetermined control upon detection overload.

8. An attitude controlling system for vehicle-supported equipment according to claim 7, wherein said electronic control means stop energization of said electric drive source upon detection of overload.

9. An attitude controlling system for vehicle-supported equipment comprising:

a vehicle-supported attitude controlling mechanism for setting an attitude of at least one vehicle-supported equipment such as a steering wheel, seat and others;

an electric drive source for driving said vehicle-supported attitude controlling mechanism;

attitude detection means for detecting at least one of an attitude of said steering wheel and and attitude of said seat;

a manual attitude adjusting switch;

engine stoppage detecting means;

at least two vehicle stoppage detection means for outputting signals in response to the presence or absence of stopping of a vehicle, or boarding/alighting action of a driver; and

electronic control means for controlling an automatic operation for energizing said electric drive source to automatically set said vehicle-supported equipment into a boarding/alighting position, when said vehicle stoppage detection means outputs at least two signals indicative of stopping of energizing said electric drive source to automatically set said vehicle-supported equipment into a driving position, when said vehicle stoppage detection means outputs signals indicative of release from stopping of the vehicle or boarding action of the driver, for controlling a manual operation energizing said electric drive source in accordance with a state of said manual attitude adjusting switch, for inhibiting said automatic operation when said engine stoppage detecting means detects engine stoppage, for monitoring the voltage of a vehicle-supported battery, and for inhibiting said automatic operation and said manual operation when the voltage is lowered less than a predetermined value.